It’s beer on the go with the 1/2 Gallon (64 oz.) Amber Glass Beer Growler, which has a twist on and off finish with a long and wide body that has a tapered shoulder and neck. The amber glass beer bottle protects light from infiltrating to maintain taste. Portable growlers are great for storing craft, domestic, and homebrew beer for parties and other special events. This jug or growler is packaged with a 38mm 38-400 black/gold metal cap with Plastisol liner. The Plastisol liner is designed to create an air tight seal when heated. It is recommended for high temperature applications.